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Premature Atrial Contraction

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1. Heart rate and premature atrial contractions at 24hECG independently predict atrial fibrillation in a population-based study. (PubMed)

Heart rate and premature atrial contractions at 24hECG independently predict atrial fibrillation in a population-based study. Low resting heart rate and premature atrial contractions (PACs) predict incident atrial fibrillation (AF) and could be interdependent, since PACs occur in the gaps between normal beats.To study the association between low heart rate at 24hECG, PACs and incident AF in a prospective population-based cohort.In the Malmö Diet and Cancer study, 24hECGs were performed in 377

2019 Heart

2. Atrial Premature Contractions Arising from the Right Atrial Appendage (PubMed)

Atrial Premature Contractions Arising from the Right Atrial Appendage 28836566 2018 10 09 2018 11 13 2542-5641 130 17 2017 09 05 Chinese medical journal Chin. Med. J. Atrial Premature Contractions Arising from the Right Atrial Appendage. 2136-2137 10.4103/0366-6999.213430 Feng Xiang-Fei XF Department of Cardiology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China. Sun Jian J Department of Cardiology, Xin Hua Hospital Affiliated to Shanghai (...) Jiao Tong University School of Medicine, Shanghai 200092, China. Zhang Rui R Department of Cardiology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China. Li Yi-Gang YG Department of Cardiology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China. eng Case Reports Letter China Chin Med J (Engl) 7513795 0366-6999 IM Aged Atrial Appendage physiopathology Atrial Fibrillation therapy Catheter

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2017 Chinese medical journal

3. Multifocal atrial and ventricular premature contractions with an increased risk of dilated cardiomyopathy caused by a Na<sub>v</sub>1.5 gain-of-function mutation (G213D). (PubMed)

Multifocal atrial and ventricular premature contractions with an increased risk of dilated cardiomyopathy caused by a Nav1.5 gain-of-function mutation (G213D). SCN5A mutations can lead to different cardiac diseases. Recently, SCN5A mutations have been linked to the clinical entity multifocal ectopic Purkinje-related premature contractions (MEPPC) characterized by ventricular ectopy and dilated cardiomyopathy.A family with a uniform MEPPC-like phenotype, associated with complex atrial (...) atrial and ventricular contractions in four patients.The Nav1.5_G213D mutation is associated with a gain-of-function phenotype, multifocal atrial and ventricular ectopy and dilated cardiomyopathy. Since patients with a MEPPC-like phenotype may specifically benefit from Class-1 antiarrhythmic drugs or amiodarone, clinical identification of this disease entity is important.Copyright © 2017 Elsevier B.V. All rights reserved.

2018 International journal of cardiology

4. Left atrial appendage as a vantage point for mapping and ablating premature ventricular contractions originating in the epicardial left ventricular summit (PubMed)

Left atrial appendage as a vantage point for mapping and ablating premature ventricular contractions originating in the epicardial left ventricular summit Idiopathic ventricular tachycardia arising from the LV summit epicardial area can be successfully mapped and possibly ablated from the left atrial appendage.

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2018 Clinical Case Reports

5. The utility of atrial overdrive pacing during catheter ablation of premature ventricular contractions originating from the posterior-superior process of the left ventricle (PubMed)

The utility of atrial overdrive pacing during catheter ablation of premature ventricular contractions originating from the posterior-superior process of the left ventricle A 76-year-old man presented with frequent premature ventricular contractions (PVCs). The electrophysiological findings revealed the origin of the PVCs was in the posterior-superior process of the left ventricle (PSP-LV), which is anatomically adjacent to the infero-medial aspect of the right atrium (RA). After a failed (...) ablation from the LV, ablation in the RA eliminated the PVCs. During additional ablation, the atrio-his (AH) interval was monitored by atrial overdrive pacing, and ablation was terminated immediately after the AH interval prolonged to 174 ms. We believe that the atrial overdrive pacing was useful for monitoring the AH interval to prevent atrioventricular block during ablation of PVCs from the PSP-LV.

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2018 Journal of cardiology cases

6. A confused ECG with multiple rhythms caused by atrial premature contractions: A case report. (PubMed)

A confused ECG with multiple rhythms caused by atrial premature contractions: A case report. Atrial premature contractions (APCs) are commonly encountered in clinical practice. The APCs may influence heart conduction system and induce other arrhythmia. The disorder of atrioventricular conduction is related to electrophysiological phenomena, difficult to understand and diagnose.We presented a 15-year-old male patient whose baseline electrocardiogram (ECG) was confused with multiple rhythms (...) . Electrophysiological study results showed sinus rhythm with nonconducted APCs in bigeminal rhythm. Nonconducted APCs were blocked without H wave. Some APCs conducted to ventricle with longer AH interval and HV interval. When APCs were abolished by radiofrequency ablation, this patient was free from any arrhythmia during follow-up.We considered that the basic rhythm of the baseline ECG was sinus rhythm with atrial bigeminy rhythm and narrow QRS extrasystoles (junctional); some APCs were blocked and some APCs

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2017 Medicine

7. Electrocardiogram PR Interval Is a Surrogate Marker to Predict New Occurrence of Atrial Fibrillation in Patients with Frequent Premature Atrial Contractions (PubMed)

Electrocardiogram PR Interval Is a Surrogate Marker to Predict New Occurrence of Atrial Fibrillation in Patients with Frequent Premature Atrial Contractions The clinical significance of prolonged PR interval has not been evaluated in patients with frequent premature atrial contractions (PACs). We investigated whether prolonged PR interval could predict new occurrence of atrial fibrillation (AF) in patients with frequent PACs. We retrospectively analyzed 684 patients with frequent PACs (> 100 (...) , 1.033; 95% CI, 1.006-1.060; P = 0.015), and left atrial (LA) dimension (HR, 1.061; 95% CI, 1.012-1.112; P = 0.015) were associated with AF occurrence. Prolonged PR interval, advanced age, and enlarged LA dimension are independent risk factors of AF occurrence in patients with frequent PACs.

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2016 Journal of Korean medical science

8. Electrical PR Interval Variation Predicts New Occurrence of Atrial Fibrillation in Patients With Frequent Premature Atrial Contractions. (PubMed)

Electrical PR Interval Variation Predicts New Occurrence of Atrial Fibrillation in Patients With Frequent Premature Atrial Contractions. Atrial fibrillation (AF) is associated with the autonomic nervous system (ANS), and fluctuation of autonomic tone is more prominent in patients with AF. As autonomic tone affects the heart rate (HR), and there is an inverse relationship between HR and PR interval, PR interval variation could be greater in patients with AF than in those without AF. The purpose

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2016 Medicine

9. Reduced heart rate response after premature ventricular contraction depending on severity of atrial fibrillation symptoms – Analysis on heart rate turbulence in atrial fibrillation patients (PubMed)

Reduced heart rate response after premature ventricular contraction depending on severity of atrial fibrillation symptoms – Analysis on heart rate turbulence in atrial fibrillation patients The severity of symptoms during atrial fibrillation (AF) may be influenced by heart rate and blood pressure variation, due to irregular beats and the related adaptations in baroreflex sensitivity. This study investigated whether heart rate turbulence (HRT) as a reflection of baroreflex sensitivity (...) an independent and significant association between a diminished TO and milder AF symptoms (P < 0.05).The usual heart rate acceleration after premature ventricular contraction is significantly diminished in pts with milder AF symptoms as compared to pts with severe AF symptoms. The mechanism of association between this diminished response and symptoms should be further investigated.

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2018 International journal of cardiology. Heart & vasculature

10. Premature Atrial Contractions on the Screening Electrocardiogram and Risk of Ischemic Stroke: The REasons for Geographic And Racial Differences in Stroke Study (PubMed)

Premature Atrial Contractions on the Screening Electrocardiogram and Risk of Ischemic Stroke: The REasons for Geographic And Racial Differences in Stroke Study It is currently unknown if premature atrial contractions (PACs) detected on the routine screening electrocardiogram are associated with an increased risk of ischemic stroke.We examined the association between PACs and ischemic stroke in 22,975 (mean age 64 ± 9.2; 56% women; 40% black) participants from the Reasons for Geographic

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2016 Neuroepidemiology

11. Fine Particulate Air Pollution and Premature Atrial Contractions: The REasons for Geographic And Racial Differences in Stroke Study (PubMed)

Fine Particulate Air Pollution and Premature Atrial Contractions: The REasons for Geographic And Racial Differences in Stroke Study Several reports have suggested that particulate matter (PM) exposure increases the risk for atrial arrhythmias. However, data from large-scale epidemiologic studies supporting this hypothesis are lacking. We examined the association of PM <2.5 μm in diameter (PM2.5) concentration with premature atrial contractions (PACs) in 26,609 (mean age=65±9.4 years; 55% female

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2016 Journal of exposure science & environmental epidemiology

12. Use of self-gated radial cardiovascular magnetic resonance to detect and classify arrhythmias (atrial fibrillation and premature ventricular contraction). (PubMed)

Use of self-gated radial cardiovascular magnetic resonance to detect and classify arrhythmias (atrial fibrillation and premature ventricular contraction). Arrhythmia can significantly alter the image quality of cardiovascular magnetic resonance (CMR); automatic detection and sorting of the most frequent types of arrhythmias during the CMR acquisition could potentially improve image quality. New CMR techniques, such as non-Cartesian CMR, can allow self-gating: from cardiac motion-related signal (...) changes, we can detect cardiac cycles without an electrocardiogram. We can further use this data to obtain a surrogate for RR intervals (valley intervals: VV). Our purpose was to evaluate the feasibility of an automated method for classification of non-arrhythmic (NA) (regular cycles) and arrhythmic patients (A) (irregular cycles), and for sorting of common arrhythmia patterns between atrial fibrillation (AF) and premature ventricular contraction (PVC), using the cardiac motion-related signal obtained

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2016 Journal of Cardiovascular Magnetic Resonance

13. Premature Atrial Contraction

Premature Atrial Contraction Premature Atrial Contraction Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Premature Atrial Contraction (...) Premature Atrial Contraction Aka: Premature Atrial Contraction , PAC , Supraventricular Premature Complexes From Related Chapters II. Causes Usually idiopathic and benign excess Acid-base disturbance Electrolyte abnormality III. Signs: EKG Findings No compensatory pause included in Associated with right bundle branch Normal narrow QRS with normal axis IV. Precautions Supraventricular Premature Complexes (SVPCs) are associated with risk of and cardiac events Images: Related links to external sites (from

2018 FP Notebook

14. Left Ventricular Dyssynchrony Predicts the Cardiomyopathy Associated With Premature Ventricular Contractions. (PubMed)

Left Ventricular Dyssynchrony Predicts the Cardiomyopathy Associated With Premature Ventricular Contractions. The pathophysiology of cardiomyopathy associated with premature ventricular contractions (PVCs) remains unclear.This study prospectively explored cardiomyopathy development in a swine model of paced ectopic beats.A total of 35 swine underwent pacemaker implantation. A group exposed to paced bigeminy from the right ventricular apex (RVA) for 14 weeks (RVA PVC) (n = 10) were compared (...) with a group exposed to regular pacing from the RVA at 140 beats/min (RV-140) (n = 5) and a control group (n = 5). To test the role of ectopic beat dyssynchrony, further groups were exposed for 12 weeks to bigeminy from the right ventricular free wall (RVFW PVC) (n = 5), the left ventricular epicardium (LV Epi PVC) (n = 5) or the right atrium (premature atrial complex) (n = 5).After 14 weeks, the mean left ventricular ejection fraction (LVEF) was significantly lower in the RVA PVC group than in the RV-140

2018 Journal of the American College of Cardiology

15. Prospective Assessment of Premature Ventricular Contractions Suppression in Cardiomyopathy(PAPS)

Prospective Assessment of Premature Ventricular Contractions Suppression in Cardiomyopathy(PAPS) Prospective Assessment of Premature Ventricular Contractions Suppression in Cardiomyopathy(PAPS) - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one (...) or more studies before adding more. Prospective Assessment of Premature Ventricular Contractions Suppression in Cardiomyopathy(PAPS) (PAPS) The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. of clinical studies and talk to your health care provider before participating. Read our for details. ClinicalTrials.gov Identifier: NCT03228823 Recruitment Status

2017 Clinical Trials

16. Obstructive respiratory events and premature atrial contractions after cardioversion. (PubMed)

Obstructive respiratory events and premature atrial contractions after cardioversion. Recurrence of atrial fibrillation (AF) after electrical cardioversion (ECV) is increased in patients with obstructive sleep apnoea (OSA). In patients with persistent AF, with (n=40) and without (n=32) obstructive respiratory events (OREs) during sedation for ECV, we determined the occurrence of premature atrial contractions (PACs) before and after insertion of a nasopharyngeal tube. The influence of acute (...) obstructive respiratory events on atrial electrophysiology after termination of AF was studied in pigs. Incidence of PACs directly after ECV was higher in patients with OREs compared to those without OREs (7±2 versus 1±1 per 10 s, respectively; p<0.01). Occurrence of PACs could be reduced by 79% by insertion of a nasopharyngeal tube. In a subsequent sleeping study, patients with OREs had higher apnoea-hypopnoea indices and more PACs during night. 16 patient with and four patients without OREs had

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2015 European Respiratory Journal

17. Premature atrial contractions (PACs) as a prognostic factor for atrial fibrillation (AF), transient ischemic attack (TIA), ischemic stroke and mortality: a systematic review

Premature atrial contractions (PACs) as a prognostic factor for atrial fibrillation (AF), transient ischemic attack (TIA), ischemic stroke and mortality: a systematic review Print | PDF PROSPERO This information has been provided by the named contact for this review. CRD has accepted this information in good faith and registered the review in PROSPERO. CRD bears no responsibility or liability for the content of this registration record, any associated files or external websites. Email

2017 PROSPERO

18. The limitations and potential adverse effects of the premature ventricular contraction response (PubMed)

The limitations and potential adverse effects of the premature ventricular contraction response A 69-year-old man, who had undergone surgery for mitral and tricuspid regurgitation with the Maze procedure for paroxysmal atrial fibrillation, was admitted with an episode of syncope due to sick sinus syndrome. Three days after implantation of a dual-chamber pacemaker (Accent MRI™, St. Jude Medical Inc.,), ventricular pacing on T-wave was recorded multiple times. St. Jude Medical Inc. pacemakers (...) have a unique additional algorithm, called premature ventricular contraction response, related to preventing pacemaker-mediated tachycardia. This algorithm was determined to be a cause of ventricular pacing on T-wave. We report the limitations and potential adverse effects of such automated algorithms.

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2018 Journal of arrhythmia

19. Premature Atrial Contraction

Premature Atrial Contraction Premature Atrial Contraction Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Premature Atrial Contraction (...) Premature Atrial Contraction Aka: Premature Atrial Contraction , PAC , Supraventricular Premature Complexes From Related Chapters II. Causes Usually idiopathic and benign excess Acid-base disturbance Electrolyte abnormality III. Signs: EKG Findings No compensatory pause included in Associated with right bundle branch Normal narrow QRS with normal axis IV. Precautions Supraventricular Premature Complexes (SVPCs) are associated with risk of and cardiac events Images: Related links to external sites (from

2015 FP Notebook

20. Premature Atrial Contractions in the General Population: Frequency and Risk Factors. (PubMed)

Premature Atrial Contractions in the General Population: Frequency and Risk Factors. Premature atrial contractions (PACs) are independent predictors of atrial fibrillation, stroke, and death. However, little is known about PAC frequency in the general population and its association with other cardiovascular risk factors.We performed a cross-sectional analysis among participants of the population-based Swiss cohort Study on Air Pollution and Lung Diseases in Adults (SAPALDIA). 24-hour Holter

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2012 Circulation

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